Reversing mechanism in ovens of the regenerative type.



L; O. FLACCUS.

REVERSING MECHANISM IN OVENS OF THE REGENERATIVE TYPE.

APPLICATION FILED MAY24,1910.

15032,,1Q9R Patented July 9,1912

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LUDWIG CARL FLACCUS, 0F STETTIN, GERMANY, ASSIGNOR T0 STETTILTER GHAMOETE- FABRIK ,ACTIEN-GESELLSCHAFT VQIR,MALS DIDIER, 0F STETTIN, GERMANY.

REVERSING- MECHANISM IN O'IENS OF THE REGENERATIVE TYPE.

Specification of Letters Patent.

To all whom it may concern Be it known that I, LUDVVIG Cami FLAocos, a citizen of the German Empire, and a resident of Konig Albertstrasse 50, Stettm,

in the Kingdom of Prussia, Germany, have versing mechanlsm in which the reversing valves are not subjected to injury from and destruction by the high temperature to which they are exposed.

A further object of. theimprovements is to. provide a reversing mechanism which is simple in construction and reliable in operation, and in which the valve of the passage, through which the'air for supporting combustion flows from the regenerator to the fines ofthe oven and the valve of the passage through which the combustion gases are conducted from the fiues to the regenerator are operatively connected with the valve which controls the admission of the 'Fig. 3, is a cross-section of the part of the oven shown in Fig. 2 taken on the line A-l5.

Referring to the example illustrated in the drawing the cok ng chambers 1 of a coke oven are disposed above two channels 2 and 3 located one above the other and communieating with a regenerator 6 through inclined passages 4 and 5. Through lateral passages 7 and 8 the channels 2 and 3 communicate with the fines of the coke oven (not shown), and their function is to alternately supply air for supporting combustion to the said fines, and to remove the combus tion gases from the flues. In the former case the regenerator 6 the checker work of which has previously been heated by combustion gases is used for supplying to the fiues preheated air for supporting combustion which is admitted to the said regener ator through a channel 10 adapted to be 1 closed by a slide valve or gate .9, and in the latter case the air admitting valve 9 for controlling the admission of air to the regenerator is closed and the combustion products are withdrawn from the fiuesand conducted through the said regenerator.

The passages 4 and 5 through which the regenerator 6 communicates with the channels 2 and 3 are provided with a slide valve or gate 11 which is slidable on an inclined guide way 12 disposed transversely of the said passages 4t and 5. The slide valve is made of a slab of refractory material, suchfor example as chamotte (fire-clay), and it is formed with an aperture'13 the size of 'which corresponds substantially to the crosssection of the passages i -and 5. By its gravity the slide valve has the tendency to slide down its inclined guide way 12, and it isheld in its position by a push rod 14 bearing'against its lower end and guided in a sleeve 15.- By advancing the said push rod 14 the gate 11 can be shifted upward, while upon a release of the push rod it slides down its inclined'guide way 12 by its gravitation.

The use of an o crating push member engaging the valve from below, (instead of a pulling member extending upwardly from the valve) is of especialladvantage in the event of breakage or partial melting of such operating member. With an operating member extending upwardly from the valve, the melting or breaking of the operating member will cause the valve to drop to the bottom, taking a position in which it is liable to be injured or destroyed by the intense heat. With a push rod, however, should the upper end of the rod melt, or even in the event of breakage, the valve will drop only a short distance, coming to rest on the remaining orv unbroken part of the" push rod.

in the example illustrated the passage 4 Patented July 9,1912. Application filed May 24, 1910. Serial No. 563,129.

gases whilethrough the passage 3 the air for supporting-combustion is supplied to the flues of the coking chambers 1 I The lower endow the valve 11 is therefore cooler and more durable than its upper end, and for this reason it is an advantage to have the push rodli engage the lower end A .of the valve, as this is less liable to be injured. The inclined. arrangement .of the valve 11 not only enables it to move by gravity to one of its positions, but causes the weight of the valve-to bear on the seating' surface on which it slides, the weight of the valve or gate thus contributing to secure a tight fit of the valve on its seat. The plunger or push rod 14: being separate from the gate 11 and only in loose engagement therewith, can be removed and renewed readily without disturbing the gate. ."It will he secn'that the lower end of the valve 11 bears loosely on the upper end of the push rod 14' and is therefore capable of sliding thereon transversely. Thus, any up- Ward movement of the push rod will positively lift the valve yet an independent lateral movement of either of these partswill always be allowed, so that it does not matter whether the push rod moves perfectly true and straight or not, or whether the sleeve 15 is in-perfect alinement with the guide- .waly 12. r I

' n the position of theparts shown in the 'drawing the gate 11 has such a position,

that the combustion gases are directed through the passage 4 into the regenerator 6, while the valve 9 which controls the supply of fresh air to the regenerator is in its closing position. the push rod 14 upward the gate 11 is pushed upward, theyalve 9 for controlling the admission of the air is simultaneously i 7 opened, as will presently be described.

T0 the lower end of the pushv rod let tens1on elements, such for example as ropes 16 are attached which extend upward over pulleys17 and are attached to a shaft 18 mounted in-brackets 19. The said shaft is also connectedwith the gate 9 for controlling the ad: mission of air by means of a tension element,

in the direction of the arrow shown in Fig. 2

the rope 20 as well as the ropes 16 are wound on the said shaft. By thus winding. the ropes 16 on the shaft the ushv rod 14 is advanced in such a way as to ring the aperture 13 of the gate 11 into register with the air admitting passage 3., while the passage t e 4: is closed against the regenerator by upper part of the slide valve 11. Simultaneously, by winding u the rope 20 the air valve 9 is opened, so t iat air is admitted 6, where itis heated, and from whence it If however by moving.

passes through the passage 3 into the flues of the coking chambers 1.

As the element whi 11 controls the commu nicajtion between the regenerator and the channels 2 and 3 through the passages L and 5 consists exclusively of the slide valve 11 which is made of a slab of refractory Ina-1 terial adapted to withstand high temperatures, any injury to or destruction of the said element, and therefore inoperativeness of the reversing mechanism caused by such destruction is avoided-.1 The reversing .mehanism can be actuated in a most simple way, and it is absolutely impossible that the valve 9 which controls the admission of the air to the regencrator should remain in its opening position whenythe regenerator is brought into communication with the paspage for withdrawing the combustion gases from the flues.

VVhile' in describing the invention reference has been made to a particular embodiment of the same, and to certain details of construction, 'I ,wish it to be understood, that my invention is not limited to the construction of the appara w; shown or to the use of the same in a coke oven. For example the means for connecting the valves 11 and 9 with eachotheror with the shaft 18 may be constructed in a different Way.

I claim hereinas my invention:

1. The combination with a structure having a channel for the passage of a fluid and aninclined' slideway transverse to said channel, of a slide valve movable downward along said slideway b gravity, and an actuating member for shi ingsaid valve upward, those portions of the valve and of. the'actuating member which engage each other beingfcapable of a transverse relative sliding movement. v v

2. The combination with a structure having two channels for the passage of fluids of different temperatures, and an inclined slide valve, made of refractory material,

movable downward along said slideway by .gravity,'and means connected with the end of the valve adjacent to the cooler channel, for shifting said valve upward. v

3. The combination with a structure hav- I ing a channel for the passage of a fluid, an

inclined slideway transverse to said channel,

and an inclined guide in line with said slid'e-. way, of a slide valve movable along said slideway, and a pushing member, separate from the valve yet adapted to engage the same, said pushin member being movable along said inclined guide.

4. The combination with a structure havthe passage of a relatively cooler fluid,'and an inclined slideway transverse to saidchanin an'upper 'phannel for the passage of a is relatively hot fluid, a lower channel for memes nels, of a slide valve of refractory material movable downward along said slideway by .gravity, and means, connected with the ing two channels for the passage of fluids of different temperatures, and a slideway transverse to said channels, of'a slide valve movable along said slideway, and valveshifting means. connected with the end of the valve adjacent to the cooler channel.

6. The combination with a structure having a channel for the passage of a fluid, an inclined slideway transverse to said channel,

and an inclined guide in line with said slide- Way, of a slide valve movable along said slideway, and a pushing membr.,- separate from the valve yet adapted in engage the same, said pushing member being movable 20 along said mclined. guide and the engaglng portlons of the; valve and of the pushing member respectivel' being capable of. a transverse relative s iding movement. I

In testimon whereof I hereunto affix my '25 signature in txe presence of two witnesses. LUDVVIG CL FLAGGUSQ WVitnesses: Gas. LILIEGUIST, Emit. SCHMIDT. 

